What is this?

[Dearth]

Originally Posted by FishyFishy!

A member on another forum suggested Labyrinthulaceae. Which by the very little info I've been able to find online seems accurate. But nothing tells me if it's good or bad!

I spent a some time tonight searching this and as you stated there is very little information about this particular species. What is known is that:

-It is commonly found in sea grasses and have been regularly found on underwater plant leaves

-it is classified as a worm and some also classify it as a fungi

-when found in home aquariums is often misidentified due to its rarity in the home aquarium

-from three separate forum sources (R2R, British aquarists(no longer active) and a German forum) specimens were observed in home aquariums but observers found no negative impact to aquariums but most of these posts were from several years ago I have found nothing since

This is all I could find